- 专利标题： Duct cover for an image projection apparatus
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申请号： US14453870申请日： 2014-08-07
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公开(公告)号： US09606426B2公开(公告)日： 2017-03-28
- 发明人: Naoyuki Ishikawa , Tetsuya Fujioka , Hideo Kanai , Akihisa Mikawa , Masamichi Yamada , Yasunari Mikutsu , Satoshi Tsuchiya , Yukimi Nishi
- 申请人： Naoyuki Ishikawa , Tetsuya Fujioka , Hideo Kanai , Akihisa Mikawa , Masamichi Yamada , Yasunari Mikutsu , Satoshi Tsuchiya , Yukimi Nishi
- 申请人地址： JP Tokyo
- 专利权人： RICOH COMPANY, LTD.
- 当前专利权人： RICOH COMPANY, LTD.
- 当前专利权人地址： JP Tokyo
- 代理机构： Harness, Dickey & Pierce, P.L.C.
- 优先权： JP2013-168231 20130813
- 主分类号： G03B21/16
- IPC分类号： G03B21/16 ; H04N9/31 ; G03B21/20 ; G03B21/14
摘要：
An image projection apparatus includes: a grid portion provided on a housing of the apparatus and having a plurality of grids through which air flows in or out of the apparatus. The grid portion includes an edge portion of the grid portion, and a central portion of the grid portion, having a thickness thicker than a thickness of the edge portion of the grid portion.
公开/授权文献
- US20150049311A1 IMAGE PROJECTION APPARATUS 公开/授权日：2015-02-19
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